Perhaps you should try some spelling variations:
"coder coder wavelets and programming" » "coder coder wavelets _ programming" (Expand search), "coder coder wavelets goal programming" (Expand search), "coder golden wavelets and programming" (Expand search), "coder redes wavelets and programming" (Expand search), "coder complex wavelets and programming" (Expand search), "coder decoder wavelets and programming" (Expand search), "code code wavelets and programming" (Expand search), "decoder codec wavelets and programming" (Expand search)
"_ python python python programming" » "_ pythons python python programming" (Expand search), "_ piton python python programming" (Expand search), "_ pitons python python programming" (Expand search)

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• Performing a fuzzy search may retrieve terms with similar spellings: (("coder coder wavelets and programming") OR ("_ python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder coder wavelets and programming\") OR (\"_ python python python programming\"))".
• Removing quotes may allow a broader search: (( coder coder wavelets and programming ) OR ( _ python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder coder wavelets and programming") OR ("_ python python python programming"))*.